Chapter 3 – Using the Web Management Software
PPP
PPP > PPP Configuration
NAT Configuration
NAT
Enable/disable NAT (Network Address Translation). The default is
Enable
.
If NAT is enabled:
●
Your LAN can use one set of IP addresses for internal traffic and a second set of addresses for
external traffic. In other words, the router with NAT does the simple IP routing between the LAN
interface and the WAN interface. NAT hides the LAN address behind a single IP address won
the wireless side.
●
Your internal addresses are shielded from the public Internet.
If NAT is disabled:
●
The router functions without performing any address translation on the packets passing through
it.
●
Masquerading of packets originating from the LAN is disabled.
●
Address translation of packets arriving from the WAN is also disabled.
●
Any DNAT Configuration previously setup in the DNAT Configuration screen is disabled. This
prevents the user from adding any DNAT rules, which if allowed would defeat the purpose of
enabling Routing.
Note:
For routing to take effect, the configuration must be saved after enabling it. It won’t be effective
on the fly at runtime.
28
Multi-Tech Systems, Inc. MultiModem rCell User Guide